Statistical Analysis of Diesel Fuel Effects on Particle Number and Mass Emissions

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• 作者：Leonidas Ntziachristos ; Zissis Samaras ; Panayotis Pistikopoulos ; and Nikolas Kyriakis
• 刊名：Environmental Science & Technology
• 出版年：2000
• 出版时间：December 15, 2000
• 年：2000
• 卷：34
• 期：24
• 页码：5106 - 5114
• 全文大小：111K
• 年卷期：v.34,no.24(December 15, 2000)
• ISSN：1520-5851

文摘

Particle number concentration and particle matteremissions from an indirect injection diesel light dutyvehicle are statistically examined to reveal significantdifferences using eight nonoxygenate, one oxygenate, andthe reference fuel. All fuels are of very low sulfur (<43ppmw) and aromatics (<23.7% vol.) concentration. Analysisof variance is applied on particle samples collected fromraw exhaust by an Electrical Low Pressure Impactor and onfilter measurements conducted in the dilution tunnelover the Urban and the Extra Urban Driving Cycles. Statisticallysignificant increase on both the number and the mass ofemitted particles is established with increasing sulfur andaromatics content accompanied by a marginal increaseof the mean particle size. Total number differs by ~3 timesand mass by ~50% between the most and least refinedof the fuels tested. Finally, use of the oxygenate fuel providesa ~20% reduction of both the mass and the numberover an equivalent, nonoxygenated fuel.